Home / 4,120.58-6,176.28-1,778.88

Finding the Fourth Proportional to 4,120.58, 6,176.28 and 1,778.88

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Solution

The fourth proportional to 4,120.58, 6,176.28 and 1,778.88 is: 2,666.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.58 : 6,176.28 = 1,778.88 : x
  2. Step 2: Convert to fraction form
    4,120.58/6,176.28 = 1,778.88/x
  3. Step 3: Cross multiply
    4,120.58x = 6,176.28 × 1,778.88
  4. Step 4: Simplify right side
    4,120.58x = 10,986,860.97
  5. Step 5: Solve for x
    x = 10,986,860.97/4,120.58
  6. Step 6: Final answer
    x = 2,666.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.